Now showing items 1-20 of 22

  • Breakage function for HPGR: mineral and mechanical characterization of tantalum and tungsten ores 

    Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hamid, Sarbast; Oliva Moncunill, Josep; Alfonso Abella, María Pura; García-Vallès, Maite; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Escobet Canal, Teresa; Argelaguet Isanta, María Rosa; Escobet Canal, Antoni; Felipe Blanch, José Juan de; Parcerisa Duocastella, David; Peña Pitarch, Esteve (2018-04-20)
    Article
    Open Access
    The modelling of high pressure grinding rolls is described by the population balance model, a mass balance which includes several functions that are related to the mineral characteristics, material kinetics and operative ...
  • Calcium phosphate glasses: Silanation process and effect on the bioactivity behavior of Glass-PMMA composites 

    Morejon Alonso, lizette; Delgado Garcia-Menocal, Jose Angel; Tarrago Aymerich, Mariona; Alvarez Guichard, Julio Andres; García-Vallès, Maite; Martínez Manent, Salvador; Ginebra Molins, Maria Pau (2014-02-01)
    Article
    Restricted access - publisher's policy
    This article presents the results of a study of the efficiency of silanation process of calcium phosphate glasses particles and its effect on the bioactivity behavior of glass- poly(methyl methacrylate) (PMMA) composites. ...
  • Fe in P-doped basaltic melts: a Mössbauer spectroscopy study 

    Tarragó Aymerich, Mariona; García-Vallès, Maite; Méndez Martínez, Salvador; Pradell Cara, Trinitat; Bruna Escuer, Pere (2018-10-01)
    Article
    Restricted access - publisher's policy
    The addition of P to a basalt causes a change in the environment of Fe. At low P contents iron is located in the glass structure and the Fe3+/Fe2+ ratio is about 80/20. Further addition of P causes a collapse of the glass ...
  • Kaolin from Acoculco (Puebla, Mexico) as raw material: mineralogical and thermal characterization 

    García-Vallès, Maite; Alfonso Abella, María Pura; Canet Miquel, Carles; Martínez Manent, Salvador; Jiménez-Franco, Abigail; Tarrago Aymerich, Mariona; Hernández Cruz, Berenice (2015-08)
    Article
    Open Access
  • Mineral assemblages in the tin (-indium) Santa Fe mining district, Bolivia 

    Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; Trujillo, Juan Elvys; García-Vallès, Maite (2016)
    Conference lecture
    Open Access
    Covenantee:  Universidad Técnica de Oruro / Universidad Nacional Autónoma de México / Universitat de Barcelona
    The Santa Fe Mining District (SFD) is located in the Bolivian portion of the Central Andean Belt, which is an important tin province that hosts abundant world-class deposits, some of them with high indium content. In this ...
  • Mineral chemistry as a tool for optimization the mineral processing in the Central Andean Tin Belt 

    Jiménez-Franco, Abigail; Payà Campo, Anna María; Alfonso Abella, María Pura; García-Vallès, Maite (European Association of Geochemistry (EAG), 2017)
    Conference lecture
    Open Access
    Covenantee:  Universidad Técnica de Oruro
    The Central Andean tin belt is a metallogenic province, well-known by Sn, Ag, Pb, Zn, and W. However, in the Bolivian sector there is potential for strategic elements, mainly Indium, but still uncertain. In the present ...
  • Mineralogía del depósito de Sn del distrito de Santa Fe, Bolivia 

    Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (2017-06)
    Article
    Open Access
    Covenantee:  Universidad de Castilla-La Mancha / Universitat de Barcelona / Universidad Técnica de Oruro
    El depósito de Sn-Zn-Pb-Ag de Japo-Santa Fe-Morococala se encuentra en la provincia metalogenética del cinturón Central Andino. La mineralización se encuentra encajada en una secuencia metasedimentaria paleozoica y rocas ...
  • Mineralogía del yacimiento VMS de Zn-Cu-Pb-Ag-Au de Tizapa, México 

    Alfonso Abella, María Pura; Torró Abat, Lisard; Canet Miquel, Carles; Parcerisa Duocastella, David; García-Vallès, Maite; Mata Perelló, Josep Maria; Mesa Vílchez, Claudia; González Partida, Eduardo (Sociedad Española de Mineralogía, 2011)
    Conference lecture
    Open Access
  • Mineralogical and thermal characterization of borate minerals from Rio Grande deposit, Uyuni (Bolivia) 

    García-Vallès, Maite; Alfonso Abella, María Pura; Arancibia Balderrama, Jhony Roger Hanz; Martínez Manent, Salvador; Parcerisa Duocastella, David (2016-08)
    Article
    Open Access
  • Mineralogical characterisation of tantalum ores for the optimization of their processing 

    Alfonso Abella, María Pura; Oliva Moncunill, Josep; García-Vallès, Maite; Tomasa Guix, Oriol; Calvo Torralba, Daniel; Guasch Cascallo, Eduard; Anticoi Sudzuki, Hernán Francisco; Parcerisa Duocastella, David (2016-10-19)
    Article
    Open Access
  • Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia 

    Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (2015)
    Conference lecture
    Open Access
    Covenantee:  Universidad Técnica de Oruro / Universidad de Castilla-La Mancha / Universitat de Barcelona
    The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. ...
  • Mineralogy of the Santa Fe tin deposit, Bolivia 

    Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (European Geosciences Union (EGU), 2014)
    Conference lecture
    Open Access
    Covenantee:  Universidad Técnica de Oruro / Universidad de Castilla-La Mancha / Universitat de Barcelona
    Santa Fe is a Sn-Zn-Pb-Ag ore deposit located in the Oruro district, Central Andean Tin Belt, Bolivia. Mineralization occurs in veins and disseminations. It is hosted in Silurian shales and greywackes. The sedimentary ...
  • MINROCIND una eina d’aprenentatge presencial e interactiva dels jaciments de roques i minerals industrials a Catalunya: eina d'aprenentatge presencial i/o interactiu en el àmbit dels ensenyaments de la mineralogia i petrologia aplicada 

    Alfonso Abella, María Pura; García-Vallès, Maite; Vallejo, Raquel (Octaedro, 2012)
    Conference report
    Open Access
    Es presenta un nou material didàctic elaborat per a assolir l’aprenentatge de les roques industrials. Consta d’una part física i una altra virtual. La primera està constituïda per una mostra de roca polida i la seva ...
  • Nb-Ta oxide minerals of alluvial placers from the Sunsás belt, precambrian shield of Bolivia 

    Alfonso Abella, María Pura; Oliva Moncunill, Josep; Calvo Torralba, Daniel; Parcerisa Duocastella, David; García-Vallès, Maite (2015)
    Conference lecture
    Open Access
  • Obtención de vidrio a partir de residuos de la minería del estaño en Bolivia 

    Arancibia, Jhony Roger Hanz; Alfonso Abella, María Pura; García-Vallès, Maite; Martínez Manent, Salvador; Canet Miquel, Carles; Romero, Francisco Martín (2013)
    Article
    Open Access
    Los residuos generados por las actividades mineras en Bolivia representan graves problemas de contaminación ambiental. En las proximidades de las minas de estaño de Llallagua, en el Departamento de Potosí, existen escombreras ...
  • Optimization of the tantalum ore production by control the milling process 

    Alfonso Abella, María Pura; Oliva Moncunill, Josep; Álvarez Rodríguez, Beatriz; Jorge Sánchez, Juan; Sanmiquel Pera, Lluís; Parcerisa Duocastella, David; Tomasa Guix, Oriol; Calvo Torralba, Daniel; Guasch Cascallo, Eduard; Felipe Blanch, José Juan de; Anticoi Sudzuki, Hernán Francisco; García-Vallès, Maite (2015)
    Conference report
    Open Access
    Tantalum is a strategic metal with multiple applications in the new technologies. Tantalum deposits are scarce in EU. Thus, more efficient extracting processes are necessary to contribute to major European independency on ...
  • Potential of tungsten tailings as glass raw materials 

    Alfonso Abella, María Pura; Tomasa Guix, Oriol; García-Vallès, Maite; Tarragó Aymerich, Mariona; Martínez Manent, Salvador (2018-10-01)
    Article
    Restricted access - publisher's policy
    Glasses from different types of tungsten mine tailings were obtained and studied to determine their ability to be used as raw materials of commercial glass. Tailings of granitic composition from Barruecopardo, of calc-silicate ...
  • Proyecto Geoparque “Comarca Minera” en el estado de Hidalgo (México): retos, consecuencias y responsabilidades 

    Jiménez Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; Climent Costa, Ferran; Cruz-Pérez, M.; García-Vallès, Maite; Gil, Alondra; Mata Perello, Josep Maria; Mendoza, M; Mora, Juan Carlos; Parcerisa Duocastella, David; Poch, Joan; Salgado, E (Sociedad Española para la Defensa del Patrimonio Geológico y Minero (SEDPGYM), 2016)
    Conference report
    Open Access
    El Proyecto Geoparque Comarca Minera se encuentra ubicado en el estado de Hidalgo (México), y actualmente busca ser reconocido por la UNESCO al incorporarse a su Red Global de Geoparques. La red de geoparques a la fecha ...
  • Quantitative mineralogical comparison between HPGR and ball mill products of a Sn-Ta ore 

    Hamid, Sarbast; Alfonso Abella, María Pura; Anticoi Sudzuki, Hernán Francisco; Guasch Cacalló, Eduard; Oliva Moncunill, Josep; Dosbaba, Marek; García-Vallès, Maite; Chugunova, Marina (2018)
    Article
    Open Access
    The mineralogy and liberation characteristics of the comminuted Penouta leucogranite host of the Sn-Ta ore were determined. Grinding developed by a combination of high-pressure grinding rolls (HPGR) followed by a ball mill ...
  • Recycling of tailings from the Barruecopardo tungsten deposit for the production of glass 

    Alfonso Abella, María Pura; Castro López, David; García-Vallès, Maite; Tarragó Aymerich, Mariona; Tomasa Guix, Oriol; Martínez Manent, Salvador (Springer, 2016-02-26)
    Article
    Open Access